کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7897660 1510120 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and thermal study of SnS nanoflakes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis and thermal study of SnS nanoflakes
چکیده انگلیسی
SnS nanoflakes were synthesized by chemical route at a temperature of 80 °C. Stannous chloride and sodium sulphide was used as a source of Sn2+ and S2− ions respectively. The elemental stoichiometric analysis of SnS nanoflakes was done by employing energy dispersive analysis of X-rays (EDAX) technique. The structural study of the as-synthesized nanoflakes was studied by X-ray diffraction (XRD). The grain size was determined using X-ray diffraction (XRD) data employing Scherrer's formula and Hall-Williamson plot. The residual strain produced in the synthesized nanoflakes during the synthesis was obtained from Hall-Williamson plot. The transmission electron microscopy (TEM) image showed that the synthesized nanoflakes have average crystallite size of 11 nm. The thermal decomposition of SnS nanoflakes was studied employing thermogravimetric (TG), differential thermogravimetric (DTG) and differential thermal analysis (DTA) techniques. The thermal behaviour of SnS nanoflakes was compared with SnS single crystals. The thermal parameters were evaluated of the SnS nanoflakes using two most common thermal analysis methods; Broido and Coats-Redfern (CR) relations. Thermal activation energy, enthalpy change (ΔH*), entropy change (ΔS*) and free energy change (ΔG*) related to the thermal decomposition process were calculated for the SnS nanoflakes. The obtained results are discussed in details.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Asian Ceramic Societies - Volume 5, Issue 2, June 2017, Pages 193-198
نویسندگان
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